<!DOCTYPE html>
<html lang="zh-CN">
  <head>
    <meta charset="UTF-8" />
    <meta name="viewport" content="width=device-width, initial-scale=1.0" />
    <title>Document</title>
    <style>
      h1 {
        font-size: 30px;
        text-align: center;
        /* background-color: red; */
        text-shadow: 2px 20px 5px red;
      }
    </style>
  </head>
  <body>
    <h1>文本阴影</h1>
  </body>
</html>
